Fatal error: Uncaught Error: Class 'Symfony\Component\EventDispatcher\Event' not found in /home/nascflem/public_html/vendor/phpro/grumphp/src/Event/Event.php:16 Stack trace: #0 {main} thrown in /home/nascflem/public_html/vendor/phpro/grumphp/src/Event/Event.php on line 16